ts29152 1.5a ultra low dropout voltage regulator 1/8 version: b13 to - 220 - 5l to - 263 - 5l (d 2 pak) general description ts29152 is using process with a pnp pass element fo r high current, high accuracy and low dropout volta ge regulators. these regulator s feature 350mv(typ.) d ropout voltages and very low ground current, these devices also find applications in lower current and low dro pout critical systems, where their tiny dropout vol tage and ground current values are important attributes. ts2 9152 is fully protected against over current faults , reversed input polarity, reversed lead insertion, over tempe rature operation, positive and negative transient v oltage spikes, logic level enable control and error flag which sig nals whenever the output falls out of regulation. on the ts29152, the enable pin may be tied to v in if it is not required for enable control. features dropout voltage typically 0.6v @ io=1.5a output current up to 1.5a low ground current extremely fast transient response +60v transient peak voltage -20v reverse peak voltage zero current shutdown mode current limit & thermal shutdown protection ordering information part no. package packing ts29152cz5 c0 to-220-5l 50pcs / tube ts29152cm5 rn to-263-5l 800pcs / 13 reel application powerpc tm power supplies battery powered equipment consumer and personal electronics high efficiency linear power supplies high-efficiency post regulator for switching suppl y low-voltage microcontrollers and digital logic absolute maximum rating (note 1) parameter symbol limit unit supply voltage v in -20v ~ +60 v operation input voltage v in (operate) 26 v power dissipation (note 4) p d internally limited w operating junction temperature range t j -40 ~ +125 o c storage temperature range t stg -65 ~ +150 o c lead soldering temperature (260 o c) 5 s thermal performance condition package type typ unit thermal resistance junction to ambient to-220-5l 80 o c/w to-263-5l 85 pin definition : 1. enable 2. input 3. ground 4. output 5. adjust
ts29152 1.5a ultra low dropout voltage regulator 2/8 version: b13 electrical characteristics v in =v out +1v, venable=2.4v, il=10ma, co=10uf, adjustable ver sions are programmed to 5v output, tj=25oc unless otherwise specified. parameter conditions min typ max unit output voltage 0.990|vo| v out 1.010|vo| v output voltage 10ma i l 1.5a, vo+1v v in 26v 0.980|vo| 1.020|vo| input supply voltage -- -- 26 v output voltage temperature coefficient -- 20 100 ppm/ o c line regulation vo+1v v in 26v -- 0.05 0.5 % load regulation 10ma i l 1.5a -- 0.2 1.0 % dropout voltage (note 4) i l =100ma i l =750ma i l =1.5a -- -- -- 80 200 350 200 -- 600 mv quiescent current (note 5) i l =750ma i l =1.5a -- -- 8 22 -- -- ma short circuit current (note 6) v out =0 -- 2.1 3.5 a output noise, 10hz to 100khz, i l =100ma c l =2.2uf c l =10uf c l =33uf -- -- -- 600 400 260 -- -- -- uvrm s reference reference voltage 0.980|vo| 1.24 1.020|vo| v reference voltage 10ma i l 1.5a, 2.3v v in 26v 0.970|vo| 1.030|vo| adjust pin bias current -- 40 80 na reference voltage temperature coefficient (note 7) -- 20 -- ppm/ o c adjust pin bias current temperature coefficient -- 0.1 -- na/ o c enable input input logic voltage low (off) -- -- 0.8 v high (on) 2.4 -- -- enable pin input current v en =26v -- -- 750 ua v en =0.8v -- -- 5 regulator output current shutdown v en 0.8v, v in 26v, v out =0 -- 10 500 ua
ts29152 1.5a ultra low dropout voltage regulator 3/8 version: b13 electrical specification (continue) note 1: absolute maximum rating is limits beyond wh ich damage to the device may occur. for guaranteed specifications and test conditions see the electric al characteristics. note 2: maximum positive supply voltage of 60v must be limited duration (<100ms) and duty cycle (<1%). note 3: the maximum allowable power dissipation is a function of the maximum junction temperature, t j , the junction to ambient thermal resistance, , and the ambient temperature , ta. exceeding the m aximum allowable power dissipation will cause excessive di e temperature, and the regulator will go into therm al shutdown. the effective value of ja can be reduced by using a heatsink. note 4: dropout voltage is defined as the input to output differential at which the output voltage dro ps 2% below its nominal value measured at 1v differential. note 5: ground pin current is the regulator quiesce nt current. the total current drawn from the source is the sum of the ground pin current and output load current. note 6: output current will decrease with increasin g temperature, but it will be not dropped below 1.5 a at the maximum specified temperature. note 7: thermal regulation is defined as the change in output voltage at a time t after a change in po wer dissipation is applied, excluding load or line regu lation effects. specification are for a 200ma load pulse at v in =20v(a 4w pulse) for t=10ms note 8: comparator thresholds are expressed in term s of a voltage differential at the adjust terminal below the nominal reference voltage measured at 6v input. to express these thresholds in terms of output voltage change, multiply by the error amplifier gain = v out /v ref = (r1+r2) / r2. for example, at a programmed output voltage of 5v, the error output is guarantee d to go low when the output drops by 95mv x 5v / 1. 24v = 384mv. thresholds remain constant as a percent of v out as v out is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guara nteed. pin description pin configuration function description enable enable (input): ttl/coms compatible input. logic hi gh is enable; logic low or open is shutdown input unregulated input: +26v maximum supply ground ground: ground pin and tab/heatsink are internally connected. output regulator output adjust adjustment input: feedback input. connect to resist ive voltage-divider network. typical application circuit
ts29152 1.5a ultra low dropout voltage regulator 4/8 version: b13 function description the ts29152 is high performance with low dropout vo ltage regulator suitable for moderate to high curre nt and voltage regulator application. its 350ma(typ) dropo ut voltage at full load and over temperature makes it especially valuable in battery power systems and as high effic iency noise filters in post regulator applications. unlike normal npn transistor design, where the base to emitter vo ltage drop and collector to emitter saturation volt age limit the minimum dropout voltage, dropout performance of the pnp output of these devices is limited only by low v ce saturation voltage. the ts29152 is fully protected from damage due to f ault conditions. linear current limiting is provide d. output current during overload conditions is constant. the rmal shutdown the device when the die temperature e xceeds the maximum safe operating temperature. transient prote ction allows device survival even when the input vo ltage spikes above and below nominal. the output structur e of these regulators allows voltages in excess of the desired output voltage to be applied without reverse curren t flow. capacitor requirement the ts29152 requires an output capacitor to maintai n stability and improve transient response is neces sary. the value of this capacitor is dependent upon the outpu t current, lower currents allow smaller capacitors. ts29152 regulators are stable with the 10uf minimum capacit or value at full load. where the regulator is power ed from a source with high ac impedance, a 0.1uf capacitor co nnected between input and ground is recommended. th e capacitor should have good characteristics to above 250khz. the capacitance values will be help to imp roved transient response, ripple rejection and output noi se. minimum load current the ts29152 is specified between finite loads. if t he output current is too small leakage currents dom inate and the output voltage rises. a 10ma minimum load current s wamps any expected leakage current across the opera ting temperature range. thermal characteristics ts29152 linear regulators are simple to use, the mo st complicated design parameters to consider are th ermal characteristics, thermal design requires the follow ing application specification parameters: * maximum ambient temperature, ta * output current, i out * output voltage, v out * input voltage, v in we calculate the power dissipation of the regulator from these numbers and the device parameters from this data sheet. a heatsink may be required depending on the maximum power dissipation and maximum ambient temperature of the application. under all possible operating conditions, the junction temperature must be within the range specified under absolute maximum ratings. to determine if the heatsink is required, the power di ssipated by the regulator, p d must be calculated. the below formula shows the voltages and currents f or calculating the p d in the regulator: i in = i l / i g p d = (v in - v out ) * i l + (v in ) * i g ex. p d = (3.3v-2.5v) * 0.5a + 3.3v * 11ma = 400mw + 36mw = 436mw remark: i l is output load current, i g is ground current. v in is input voltage v out is output voltage
ts29152 1.5a ultra low dropout voltage regulator 5/8 version: b13 thermal characteristics (continue) the next parameter which must be calculated is the maximum allowable temperature rise, t r (max). this is calculated by the using to formula: t r (max) = t j (max) C t a (max) where: t j (max) is the maximum allowable junction temperature , which is 125 o c for commercial grade parts. t a (max) is the maximum ambient temperature which will be encountered in the application. using the calcu lated values for t r (max) and p d , the maximum allowable value for the junction to a mbient thermal resistance, ja , can now be found: ja = t r (max) / p d adjustable regulator design the adjustable regulator versions is allow to progr amming the output voltage anywhere between 1.25 and the 26v maximum operating rating of the family. two res istors are used. resistors can be quite large up to 1m ? , because of the very high input impedance and low bi as current of the sense comparator, the resistor va lues are calculated by: r1 = r2 * [(v out / 1.24) C 1] where is vout the desired output voltage. above app lication circuit shows component definition. applic ations with widely varying load currents may scale the resistor s to draw the minimum load current required for pro per operation. enable input ts29152 versions feature an enable (en) input that allows on/off control of the device. special design allows zero current drain when the device is disabledCon ly microamperes of leakage current flow. the en inp ut has ttl/cmos compatible thresholds for simple interfaci ng with logic, or may be directly tied to 30v. enabling the regulator requires approximately 20ua of current.
ts29152 1.5a ultra low dropout voltage regulator 6/8 version: b13 to-220-5l mechanical drawing unit: millimeters marking diagram y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) l = lot code
ts29152 1.5a ultra low dropout voltage regulator 7/8 version: b13 to-263-5l mechanical drawing unit: millimeters marking diagram y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) l = lot code
ts29152 1.5a ultra low dropout voltage regulator 8/8 version: b13 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any erro rs or inaccuracies. information contained herein is intended to provide a product description only. no license, express or implied, to any intellectual property rights is granted by this document. except as provided in tscs terms and co nditions of sale for such products, tsc assumes no liability wh atsoever, and disclaims any express or implied warr anty, relating to sale and/or use of tsc products includi ng liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, cop yright, or other intellectual property right. the products shown herein are not designed for use in medical, life-saving, or life-sustaining applica tions. customers using or selling these products for use i n such applications do so at their own risk and agr ee to fully indemnify tsc for any damages resulting from such i mproper use or sale.
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